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DS5000, DS5000T

Soft Microcontroller Module

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Status Explanations for product status codes

Part Number Status
DS5000 Active: In Production. See Ordering Information for details.
DS5000T Active: In Production. See Ordering Information for details.


The DS5000(T) Soft Microcontroller Module is a fully 8051-compatible 8-bit CMOS microcontroller that offers "softness" in all aspects of its application. This is accomplished through the comprehensive use of nonvolatile technology to preserve all information in the absence of system VCC. The internal program/data memory space is implemented using either 8 or 32 kbytes of nonvolatile CMOS SRAM. Furthermore, internal data registers and key configuration registers are also nonvolatile. An optional realtime clock (RTC) gives permanently powered timekeeping. The clock keeps time to a hundredth of a second using an on-board crystal.

Note: Designers must have the following documents to fully use all the features of this device. This data sheet contains pin descriptions, feature overviews, and electrical specifications. Errata sheets contain deviations from published specifications. The user's guides offer detailed information about device features and operation.

Data Sheet

Download this datasheet in PDF formatDownload Rev 2 (PDF, 380kB)
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Errata DS5000T 5000TD2.pdf
Errata DS5000T 5000TD5.pdf
Errata DS5000T 5000TD6.pdf
An evaluation board is available: DS89C450-KIT DS5000TK

This product contains lithium-metal batteries. See applicable regulations for transport requirements for batteries in equipment.

NOTE: This product uses the following:
DS5000(T) Example Software

Key Features

  • 8-Bit 8051-Compatible Microcontroller Adapts to Task at Hand
    • 8 or 32 kbytes of Nonvolatile RAM for Program and/or Data Memory Storage
    • Initial Downloading of Software in End System via On-Chip Serial Port
    • Capable of Modifying Its Own Program and/or Data Memory in End Use
  • Crashproof Operation
    • Maintains All Nonvolatile Resources for 10 Years in the Absence of VCC at Room Temperature
    • Power-Fail Reset
    • Early Warning Power-Fail Interrupt
    • Watchdog Timer
  • Software Security Feature
    • Executes Encrypted Software to Prevent Unauthorized Disclosure
  • On-Chip, Full-Duplex Serial I/O Ports
  • Two On-Chip Timer/Event Counters
  • 32 Parallel I/O Lines
  • Compatible with Industry Standard 8051
    • Instruction Set and Pinout
  • Optional Permanently Powered Real-Time Clock (DS5000T)
  • Underwriters Laboratories (UL) Recognized


DS5000T: Block Diagram
Block Diagram

Notes and Comments

Note: This data sheet provides ordering information, pinout, and electrical specifications. Refer to the Secure Microcontroller User's Guide for operating information.

More Information

Microcontroller Tool Kit Development Software
Secure Microcontroller User's Guide (PDF, 1.6MB, 07/14/03)

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Information Index

Rev 2; 2006-07-12
This page last modified: 2009-10-15